ev-sidebar-bookmarks: use NULL instead of uninitialized variable

follow-up to be5fadc

Author: monsta

shell/ev-sidebar-bookmarks.c

@@ -331,7 +331,6 @@ ev_sidebar_bookmarks_popup_menu_show (EvSidebarBookmarks *sidebar_bookmarks,
         EvSidebarBookmarksPrivate *priv = sidebar_bookmarks->priv;
         GtkTreeView               *tree_view = GTK_TREE_VIEW (sidebar_bookmarks->priv->tree_view);
         GtkTreeSelection          *selection = gtk_tree_view_get_selection (tree_view);
-        GdkEvent                  *event;
 
         if (keyboard_mode) {
                 if (!gtk_tree_selection_get_selected (selection, NULL, NULL))
@@ -355,7 +354,7 @@ ev_sidebar_bookmarks_popup_menu_show (EvSidebarBookmarks *sidebar_bookmarks,
         if (!priv->popup)
                 priv->popup = gtk_ui_manager_get_widget (priv->ui_manager, "/BookmarksPopup");
 
-        gtk_menu_popup_at_pointer (GTK_MENU (priv->popup), (const GdkEvent*) event);
+        gtk_menu_popup_at_pointer (GTK_MENU (priv->popup), NULL);
         return TRUE;
 }